Pneumatic tire or other tubular flexible article.



PATENTED DEC. 27, 1904.

A. H. MARKS.

PNEUMATIC TIRE OR OTHER TUBULAR FLEXIBLE ARTICLE.

APPLICATION FILED MAR. 31, 1904. RENEWED NOV,10,1904.

L [TA/E5555: [NI/'E/VTOR W &\ Affm'mys l M UNITED STATES PatentedDecember 2?, 1904.

PATENT EEicE.

ARTHUR H. MARKS, OF AKRON, OHIO.

SPECIFICATION forming part of Letters Patent No. 778,497, dated December27, 1904,

Application filed March 31, 1904. Renewed November 10, 1904. Serial E0.232,132.

To CLZZ whom it may concern:

Be it known that I, ARTHUR H. MARKS, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented certain new and useful Improvements in Pneumatic Tires or otherTubular Flexible Articles, of which the following is a specification.

This invention relates to improvements in pneumatic tires, tire-covers,and other tubular flexible articles designed to withstand internalpressure; and the object is toso construct articles of this characterthat they will be more durable and less liable to burst while in use.

With the above object in view the invention consists in the novelfeatures of construction hereinafter fully described, particularlypointed out in the claims, and clearly illustrated by the accompanyingdrawings, in which- Figure 1 is a transverse sectional view showing atire-cover constructed in accordance with my invention, and Fig. 2 aplan view showing the successive layers of fabric employed in theconstruction of the improved cover.

In my application for Letters Patent filed September 9, 1904, Serial No.223,846, I have claimed, broadly, means for increasing the life of atire or other tubular flexible article by rendering it less liable toburst under pressure, the invention consisting, broadly, in providinglayers of reinforcing material of varying degrees of elasticity, thelayer having the greatest degree of elasticity being arranged innermostand each succeeding layer of less elasticity than its predecessor,whereby the structure will stretch uniformly when subjected to pressure.

In the present case I have disclosed another structure for carrying outthe broad idea.

The elasticity of the several layers 1, 2, 3, and 4 is varied in thestructure here illustrated by forming the same of fabric of differenttexture and weave. Layer 1 is of maximum elasticity, layer 2 of slightlyless elasticity, layer 3 of decreasing elasticity, and layer 4 ofminimum elasticity, whereby under pressure the entire structure willstretch uniformly. It will be understood that any desired number oflayers or plies per layer may be used.

I also do not limit my invention to tire-covers, as What is known as asingle-tube pneumatic tire may be constructed in the same manner, asalso may hose or, in fact, any yielding or flexible tubular bodydesigned to withstand internal pressure, and while I show and describe atire-cover constructed in accordance with my improvement I do not limitmy invention to this specific application of the idea, as I claim itbroadly.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent of the United States, is

1. In a tire-cover, a plurality of layers of fabric constructed andarranged so that the elasticity of each layer decreases beginning withthe innermost layer, for the purpose set forth.

2. In a tire-cover, a plurality of layers of fabric of varyingelasticity arranged with the layer of maximum elasticity innermost andeach succeeding layer of fabric of less elasticity than its predecessor,for the purpose set forth.

3. In a tire-cover, a plurality of layers of fabric of varyingelasticity, the layer of fabric of the smallest are being constructedand arranged to have the greatest elasticity and the elasticity of theother layers decreasing as their arcs increase, for the purpose setforth.

4. A pneumatic-tire cover composed of rubber and layers of fabric ofvarying elasticity arranged with the layer of maximum elasticityinnermost and each succeeding layer of less elasticity than itspredecessor, for the purpose set forth.

5. A tire-cover comprising a plurality of layers of fabric of differenttexture to give layers of different degrees of elasticity, the layer offabric of the Weave giving the greatest elasticity being positionedinnermost and each succeeding layer of less elasticity than itspredecessor, for the purpose set forth.

6. A pneumatic-tire cover composed of rubber and layers of fabric ofdifferent weaves to give layers of different elasticity, the layer offabric of greatest elasticity being arranged innermost and eachsucceeding layer being of ed and arranged so that the elasticity of eachless elasticity than its predecessor, for the layer decreases beginningwith the innermost purpose set forth. layer.

7. A tire element comprising a plurality of In testimony \vhereofIhavesigned my name 5 layers of fabric or the like constructed and to thisspecification in presence of two Wit- 5 arranged so that the elasticity01 each layer nesses.

decreases beginning With the innermost layer. ARTHUR H. MARKS.

8. A yielding tubular body designed to Witnesses: Withstand internalpressure, composed of rub- O. S. HART,

1 her and layers of fabric or the like construct- A. L. PARDEE.

